What is the PrenatalSAFE® screening test?
PrenatalSAFE® is the first prenatal screening test able to detect from the most common fetal aneuploidies (13, 18, 21, X and Y) up to the rarest aneuploidies (all chromosomes of the fetal karyotype) reaching a level of information today only by invasive techniques. PrenatalSAFE® is also the only non-invasive prenatal screening test able to highlight subchomosomal structural anomalies on the whole fetal karyotype and mutations related to serious genetic diseases. The test also provides information on the sex of the fetus (optional).
What information does the PrenatalSAFE® screening test provide?
PrenatalSAFE® 3 determines the presence of the most common fetal trisomies, such as those related to chromosomes 21, 18 and 13, and includes the determination of fetal sex (optional).
PrenatalSAFE® 5 evaluates the presence of fetal aneuploidy of chromosomes 21, 18, 13 and of sex chromosomes (X and Y), and includes the determination of fetal sex (optional).
PrenatalSAFE® PLUS, in addition to the PrenatalSAFE® 5 test, identify the trisomies of chromosomes 9 and 16 and the presence of some small structural chromosomal alterations, or 6 among the most common microdelection syndromes.
PrenatalSAFE® KARYO is the first non-invasive prenatal screening test able to detect aneuploidy and structural chromosomal alterations (segmental deletions and duplications) on each chromosome of the fetal karyotype reaching a level of information comparable to that obtained by invasive techniques.
PrenatalSAFE® KARYO PLUS includes screening of 9 most common microdeletion in addition to findings of PrenatalSAFE® KARYO.
PrenatalSAFE® COMPLETE is the first non-invasive screening test able to detect aneuploidy of each chromosome of the fetal karyotype and mutations responsible for serious genetic diseases. The test is the result of a combination of PrenatalSAFE® KARYO and GeneSAFE™, a new screening test that allows the identification of genetic hereditary diseases with de novo onset in the fetus.
PrenatalSAFE® COMPLETE PLUS includes PrenatalSAFE® KARYO PLUS, and GeneSAFE™, a new screening test that allows to identify genetic diseases with hereditary transmission and with de novo onset in the fetus.
Who can undergo the PrenatalSAFE® non-invasive prenatal screening test ?
PrenatalSAFE® can be undertaken by all pregnant women with a gestational age of at least 10 weeks. PrenatalSAFE® can be performed on single pregnancies, pregnancies achieved by in vitro fertilization (IVF, ICSI) both homologous and heterologous, twin pregnancies even if obtained with assisted, homologous and heterologous fertilization techniques.
PrenatalSAFE® COMPLETE and PrenatalSAFE® COMPLETE PLUS are particularly suitable for couples with advanced paternal age.
When can the PrenatalSAFE® screening test be performed ?
PrenatalSAFE® is offered from the 10th week of gestation. There is no deadline to perform the test because the cell-free fetal DNA remains in the mother's bloodstream throughout the duration of the pregnancy.
How is the PrenatalSAFE® screening test performed ?
A simple blood sample from the future mother is needed. You do not need to be fasting to do it.
How accurate is the PrenatalSAFE® screening test ?
The PrenatalSAFE® screening test has a sensitivity and specificity higher than 99% with a very low incidence of false positives, below 0.1% of cases.
PrenatalSAFE® detects abnormalities affecting the fetal genome even at low quantities of fetal DNA (FF≥ 2%).
What kind of information is reported on the PrenatalSAFE® screening test reports ?
The results of the test are provided in clear and defined terms, as POSITIVE or NEGATIVE, i.e. presence / absence of the anomaly found within the limits of the method used.
Is the PrenatalSAFE® screening test similar to the other first and second quarter screening tests?
No. Screening tests are indirect statistical tests that are based on ultrasound examinations on the fetus and / or biochemical investigations on maternal blood, by which some substances are measured which can vary in quantity if there are some chromosomal pathologies. The PrenatalSAFE® test, while a screening test, is a direct analysis of cell-free fetal DNA and analyses the fetal DNA circulating in the maternal blood with great accuracy.
Is PrenatalSAFE® more reliable than non-invasive prenatal screening tests currently available?
Prenatal screening tests, such as the bi-test, may present a high risk for fetal trisomy even if it is actually a negative (false positive) result or may present a low risk for fetal trisomy, whereas in reality it is a positive pregnancy (false negative).
These non-invasive tests, such as the combination of free-b-HCG and PAPP-A proteins with nuchal translucency, have a false positive rate of up to 5% and do not detect about 10-15% of fetal trisomy 21 cases. With the PrenatalSAFE® screening test, the percentages of false positives and negatives fall to 0.1%.
Is PrenatalSAFE® a safe test or does it involve risks?
The PrenatalSAFE® screening test is completely safe for both the mother and the fetus. Diagnostic tests such as amniocentesis or villocentesis (CVS), although accurate for the diagnosis of fetal trisomies, are invasive and present a risk of non-negligible abortion and require appropriate antibiotic therapy.
Why choose PrenatalSAFE® compared to other fetal DNA analysis from maternal blood?
- Possibility of analysis of the entire genome for aneuploidy and structural anomalies in each chromosome.
- Possibility of detecting mutations responsible for serious genetic diseases.
- High sensitivity, even at a low percentage of fetal fraction, with a consequent reduction in the incidence of need for new collection (<1%).
- Greater reliability of the results, with a consequent increase in the detection rate (> 99%) and reduction of the incidence of false positives (<0.1%),
- Using an algorithm of bioinformatics analysis of the latest generation that evaluates the actual data (quantitative) from the analysis of sequencing, no associate of a priori risk assessments (eg. Age of the patient) or gestational age or weight of the patient.
- Results of the examination provided in clear and defined terms, such as POSITIVE or NEGATIVE, ie presence / absence of anomaly, and no longer in terms of percentage of risk (high / low risk) as for the screening tests of the 1st and 2nd trimester.
- Test is also suitable in pregnancies obtained with assisted fertilization techniques (homologous or heterologous).
- Fast reporting times (from 3 working days)
- Less blood required for the test (8-10 ml in a single tube).
What are the free services offered with PrenatalSAFE®
- Refund of test fee in case of inconclusive result
- Free blood sample transport : certified according to UN3373, and free shipping service of biological samples to the laboratory by express courier.
- All inclusive customer assistance : from sample shipment to reporting.
- Specialist and scientific support : Molecular biologists and qualified geneticists are available to discuss abnormal results.